US9212107B2 - Process for producing cumene - Google Patents

Process for producing cumene Download PDF

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US9212107B2
US9212107B2 US14/412,275 US201314412275A US9212107B2 US 9212107 B2 US9212107 B2 US 9212107B2 US 201314412275 A US201314412275 A US 201314412275A US 9212107 B2 US9212107 B2 US 9212107B2
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isopropanol
cumene
stream
alkylation
benzene
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US20150158790A1 (en
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Ronald Birkhoff
Shyh-Yuan H. Hwang
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Badger Licensing LLC
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Badger Licensing LLC
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Assigned to BADGER LICENSING LLC reassignment BADGER LICENSING LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIRKHOFF, RONALD, HWANG, SHYH-YUAN H.
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/86—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
    • C07C2/862—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms
    • C07C2/864—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon the non-hydrocarbon contains only oxygen as hetero-atoms the non-hydrocarbon is an alcohol
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/143—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of ketones
    • C07C29/145—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of ketones with hydrogen or hydrogen-containing gases
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/02—Monocyclic hydrocarbons
    • C07C15/085—Isopropylbenzene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/02—Monohydroxylic acyclic alcohols
    • C07C31/10—Monohydroxylic acyclic alcohols containing three carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/08—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by decomposition of hydroperoxides, e.g. cumene hydroperoxide
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
    • C07C39/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring monocyclic with no unsaturation outside the aromatic ring
    • C07C39/04—Phenol
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C407/00—Preparation of peroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C409/00—Peroxy compounds
    • C07C409/02—Peroxy compounds the —O—O— group being bound between a carbon atom, not further substituted by oxygen atoms, and hydrogen, i.e. hydroperoxides
    • C07C409/04—Peroxy compounds the —O—O— group being bound between a carbon atom, not further substituted by oxygen atoms, and hydrogen, i.e. hydroperoxides the carbon atom being acyclic
    • C07C409/08—Compounds containing six-membered aromatic rings
    • C07C409/10—Cumene hydroperoxide
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/53—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition of hydroperoxides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/04—Saturated compounds containing keto groups bound to acyclic carbon atoms
    • C07C49/08—Acetone
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2529/00—Catalysts comprising molecular sieves
    • C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
    • C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
    • C07C2529/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65

Definitions

  • This invention relates to a process for producing cumene and particularly, but not exclusively, to an integrated process for producing cumene and for converting the cumene to phenol.
  • Cumene is an important intermediate in the chemical and polymer industries, with global cumene production currently exceeding twelve million metric tons annually.
  • the majority of all cumene manufactured in the world today is used for the production of phenol.
  • the demand for phenol for the manufacture of Bisphenol-A and subsequently polycarbonates is accelerating, owing to the broadening applications of polycarbonates in the electronic, healthcare, and automobile industries.
  • the deleterious effects of any nitrogen impurities in the isopropanol can be effectively ameliorated by treatment of the dried recycle stream to the alkylation reactor.
  • the removal of the nitrogen impurities can be achieved by adsorption on acidic solid adsorbents, such as molecular sieves or acidic clay, and/or by treatment with an acidic water solution, such as dilute sulfuric acid.
  • the isopropanol can be mixed with fresh benzene and the resulting mixture treated to remove the nitrogen impurities.
  • FIG. 2 is a schematic diagram of a process for producing cumene by alkylating benzene with isopropanol according to a first example of the invention.
  • the catalyst employed in the alkylation step may comprise at least one medium pore molecular sieve having a Constraint Index of 2-12 (as defined in U.S. Pat. No. 4,016,218).
  • Suitable medium pore molecular sieves include ZSM-5, ZSM-11, ZSM-12, ZSM-22, ZSM-23, ZSM-35, and ZSM-48.
  • ZSM-5 is described in detail in U.S. Pat. Nos. 3,702,886 and Re. 29,948.
  • ZSM-11 is described in detail in U.S. Pat. No. 3,709,979.
  • ZSM-12 is described in U.S. Pat. No. 3,832,449.
  • ZSM-22 is described in U.S. Pat. No. 4,556,477.
  • ZSM-23 is described in U.S. Pat. No. 4,076,842.
  • ZSM-35 is described in U.S. Pat. No. 4,016,245.
  • ZSM-48 is more particularly described in U.S
  • the alkylation catalyst may comprise one or more large pore molecular sieves having a Constraint Index less than 2.
  • Suitable large pore molecular sieves include zeolite beta, zeolite Y, Ultrastable Y (USY), Dealuminized Y (Deal Y), mordenite, ZSM-3, ZSM-4, ZSM-18, and ZSM-20.
  • Zeolite ZSM-14 is described in U.S. Pat. No. 3,923,636.
  • Zeolite ZSM-20 is described in U.S. Pat. No. 3,972,983.
  • Zeolite Beta is described in U.S. Pat. Nos. 3,308,069, and Re. No. 28,341.
  • Low sodium Ultrastable Y molecular sieve (USY) is described in U.S. Pat. Nos. 3,293,192 and 3,449,070.
  • Dealuminized Y zeolite (Deal Y) may be prepared by the method found in U.S. Pat. No. 3,442,795.
  • Zeolite UHP-Y is described in U.S. Pat. No. 4,401,556.
  • Mordenite is a naturally occurring material but is also available in synthetic forms, such as TEA-mordenite (i.e., synthetic mordenite prepared from a reaction mixture comprising a tetraethylammonium directing agent).
  • TEA-mordenite is disclosed in U.S. Pat. Nos. 3,766,093 and 3,894,104.
  • the alkylation catalyst comprises at least one molecular sieve of the MCM-22 family.
  • molecular sieve of the MCM-22 family includes one or more of:
  • Molecular sieves of the MCM-22 family include those molecular sieves having an X-ray diffraction pattern including d-spacing maxima at 12.4 ⁇ 0.25, 6.9 ⁇ 0.15, 3.57 ⁇ 0.07 and 3.42 ⁇ 0.07 Angstrom.
  • the X-ray diffraction data used to characterize the material are obtained by standard techniques using the K-alpha doublet of copper as incident radiation and a diffractometer equipped with a scintillation counter and associated computer as the collection system.
  • MCM-22 Materials of the MCM-22 family include MCM-22 (described in U.S. Pat. No. 4,954,325), PSH-3 (described in U.S. Pat. No. 4,439,409), SSZ-25 (described in U.S. Pat. No. 4,826,667), ERB-1 (described in European Patent No. 0293032), ITQ-1 (described in U.S. Pat. No. 6,077,498), ITQ-2 (described in International Patent Publication No. WO97/17290), MCM-36 (described in U.S. Pat. No. 5,250,277), MCM-49 (described in U.S. Pat. No. 5,236,575), MCM-56 (described in U.S. Pat. No. 5,362,697), and mixtures thereof.
  • Related zeolite UZM-8 is also suitable for use as the present alkylation catalyst.
  • the effluent stream from the alkylation reactor can be cooled, separated into a water-rich aqueous stream and a water-depleted aromatic stream comprising cumene, unreacted benzene, and other reaction products.
  • the phenol and acetone recovered from the cleavage reaction effluent are used in a molar ratio of 2:1 to produce Bisphenol A, thereby resulting in a net surplus of acetone.
  • the isopropanol produced in the process described above will contain relatively high levels (up to 10 ppm by weight) of nitrogen compounds generated as a result of the use of amines as neutralizing agents and corrosion inhibitors in the oxidation and cleavage stages of the process. If not removed or reduced in concentration before the isopropanol is recycled to the alkylation stage, these nitrogen compounds will act as poisons to the molecular sieve alkylation catalyst and thereby reduce cycle life of the catalyst.
  • treatment to remove nitrogen-containing impurities is generally carried out by (a) passing the relevant stream through one or more vessels containing at least one solid adsorbent, such as a molecular sieve, a resin, an acidic clay or a membrane, and/or (b) washing the stream with an acidic aqueous solution, such as dilute sulfuric acid.
  • the at least one solid adsorbent comprises a clay. Suitable clays include bentonite or other montmorillonite-containing clays.
  • the clay may have been activated by treatment with an acid, such as sulfuric acid.
  • the clay is typically used as a granular or powder material.
  • a suitable example of a clay adsorbent for use in the present process is the F-24 series clay supplied by BASF.
  • a batch of acetone obtained from a commercial phenol/acetone plant was hydrogenated to isopropanol by contacting the acetone feed with hydrogen in the presence of a nickel hydrogenation catalyst at a temperature of about 80° C. and a pressure of about 3,600 kPa.
  • a portion of the reactor effluent was recycled back to the reactor inlet to keep the temperature rise below about 30° C.
  • the acetone conversion was about 99%.
  • the isopropanol product was analyzed by a gas chromatograph equipped with a Nitrogen-Phosphorous Detector (NPD) and found to contain about 0.2 wtppm nitrogen.
  • NPD Nitrogen-Phosphorous Detector

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Epoxy Compounds (AREA)
US14/412,275 2012-07-05 2013-07-02 Process for producing cumene Active US9212107B2 (en)

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US201261668284P 2012-07-05 2012-07-05
US14/412,275 US9212107B2 (en) 2012-07-05 2013-07-02 Process for producing cumene
PCT/US2013/049079 WO2014008268A1 (en) 2012-07-05 2013-07-02 Process for producing cumene

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US9212107B2 true US9212107B2 (en) 2015-12-15

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US (1) US9212107B2 (enrdf_load_stackoverflow)
EP (1) EP2850051B1 (enrdf_load_stackoverflow)
KR (1) KR102074021B1 (enrdf_load_stackoverflow)
CN (1) CN104428277B (enrdf_load_stackoverflow)
BR (1) BR112014033105B1 (enrdf_load_stackoverflow)
ES (1) ES2701085T3 (enrdf_load_stackoverflow)
IN (1) IN2014DN10948A (enrdf_load_stackoverflow)
MY (1) MY169252A (enrdf_load_stackoverflow)
PL (1) PL2850051T3 (enrdf_load_stackoverflow)
SG (1) SG11201408624RA (enrdf_load_stackoverflow)
TW (1) TWI586637B (enrdf_load_stackoverflow)
WO (1) WO2014008268A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
WO2014093018A1 (en) 2012-12-11 2014-06-19 Exxonmobil Chemical Patents Inc. Process for producing cumene with alkylation effluent recycle
CN108530257B (zh) * 2017-03-03 2024-03-26 中国石油化工股份有限公司 苯和异丙醇联产异丙苯和丙烯的方法
KR102704507B1 (ko) * 2022-02-11 2024-09-09 한국화학연구원 폐폴리스티렌 열분해 잔사유를 열분해하는 촉매 및 방법
CN115414944B (zh) * 2022-08-29 2023-11-07 武汉科林化工集团有限公司 一种丙酮加氢生产异丙醇催化剂的制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015786A (en) 1988-11-28 1991-05-14 Mitsui Petrochemical Industries Inc. Preparation of cumene through alkylation of an aromatic compound and preparation of phenol through cumene
US6512153B1 (en) 1999-07-13 2003-01-28 Enichem S.P.A. Process for the alkylation of aromatic compounds
US6841704B2 (en) * 2000-02-25 2005-01-11 Ineos Phenol Gmbh & Co. Kg Process for preparing cumene which is used in the preparation of phenol
US20110218366A1 (en) 2008-09-11 2011-09-08 Polimeri Europa S.P.A. Process for the alkylation of benzene with isopropanol or blends of isopropanol and propylene
US20110313213A1 (en) 2008-11-28 2011-12-22 Total Petrochemicals Research Feluy Purification of alcohols prior to their use in the presence of an acid catalyst

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6503410A (enrdf_load_stackoverflow) 1963-02-21 1965-09-20
US3442795A (en) 1963-02-27 1969-05-06 Mobil Oil Corp Method for preparing highly siliceous zeolite-type materials and materials resulting therefrom
USRE28341E (en) 1964-05-01 1975-02-18 Marshall dann
US3308069A (en) 1964-05-01 1967-03-07 Mobil Oil Corp Catalytic composition of a crystalline zeolite
US3293192A (en) 1965-08-23 1966-12-20 Grace W R & Co Zeolite z-14us and method of preparation thereof
US3702886A (en) 1969-10-10 1972-11-14 Mobil Oil Corp Crystalline zeolite zsm-5 and method of preparing the same
US3709979A (en) 1970-04-23 1973-01-09 Mobil Oil Corp Crystalline zeolite zsm-11
US3832449A (en) 1971-03-18 1974-08-27 Mobil Oil Corp Crystalline zeolite zsm{14 12
US3766093A (en) 1972-01-07 1973-10-16 Mobil Oil Corp Treatment of organic cationcontaining zeolites
US3894104A (en) 1973-08-09 1975-07-08 Mobil Oil Corp Aromatization of hetero-atom substituted hydrocarbons
US4016245A (en) 1973-09-04 1977-04-05 Mobil Oil Corporation Crystalline zeolite and method of preparing same
US3941871A (en) 1973-11-02 1976-03-02 Mobil Oil Corporation Crystalline silicates and method of preparing the same
US3923636A (en) 1974-06-03 1975-12-02 Texaco Inc Production of lubricating oils
US3972983A (en) 1974-11-25 1976-08-03 Mobil Oil Corporation Crystalline zeolite ZSM-20 and method of preparing same
US4016218A (en) 1975-05-29 1977-04-05 Mobil Oil Corporation Alkylation in presence of thermally modified crystalline aluminosilicate catalyst
CA1064890A (en) 1975-06-10 1979-10-23 Mae K. Rubin Crystalline zeolite, synthesis and use thereof
US4234231A (en) 1978-12-06 1980-11-18 Mobil Oil Corporation Method for restoring a leached formation
US4401556A (en) 1979-11-13 1983-08-30 Union Carbide Corporation Midbarrel hydrocracking
DE3117135A1 (de) 1981-04-30 1982-11-18 Bayer Ag, 5090 Leverkusen Kristallines alumosilicat, verfahren zu dessen herstellung sowie dessen verwendung zur katalytischen umwandlung von methanol und/oder dimethylether in kohlenwasserstoffe
US4556477A (en) 1984-03-07 1985-12-03 Mobil Oil Corporation Highly siliceous porous crystalline material ZSM-22 and its use in catalytic dewaxing of petroleum stocks
US4826667A (en) 1986-01-29 1989-05-02 Chevron Research Company Zeolite SSZ-25
US4954325A (en) 1986-07-29 1990-09-04 Mobil Oil Corp. Composition of synthetic porous crystalline material, its synthesis and use
IT1205681B (it) 1987-05-26 1989-03-31 Eniricerche Spa Materiale sintetico cristallino poroso contenente ossidi di silicio e boro
US4973790A (en) * 1989-11-16 1990-11-27 Mobil Oil Corporation Process for upgrading light olefinic streams
US5250277A (en) 1991-01-11 1993-10-05 Mobil Oil Corp. Crystalline oxide material
US5236575A (en) 1991-06-19 1993-08-17 Mobil Oil Corp. Synthetic porous crystalline mcm-49, its synthesis and use
US5362697A (en) 1993-04-26 1994-11-08 Mobil Oil Corp. Synthetic layered MCM-56, its synthesis and use
ES2124154B1 (es) 1995-11-08 1999-12-01 Univ Politecnica De Valencia C Metodo de preparaciion y propiedades cataliticas de un solido microporoso con alta superficie externa.
ES2105982B1 (es) 1995-11-23 1998-07-01 Consejo Superior Investigacion Zeolita itq-1
TW200744985A (en) * 2006-02-14 2007-12-16 Exxonmobil Chemical Patents Inc Process for producing sec-butylbenzene

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015786A (en) 1988-11-28 1991-05-14 Mitsui Petrochemical Industries Inc. Preparation of cumene through alkylation of an aromatic compound and preparation of phenol through cumene
US6512153B1 (en) 1999-07-13 2003-01-28 Enichem S.P.A. Process for the alkylation of aromatic compounds
US6841704B2 (en) * 2000-02-25 2005-01-11 Ineos Phenol Gmbh & Co. Kg Process for preparing cumene which is used in the preparation of phenol
US20110218366A1 (en) 2008-09-11 2011-09-08 Polimeri Europa S.P.A. Process for the alkylation of benzene with isopropanol or blends of isopropanol and propylene
US20110313213A1 (en) 2008-11-28 2011-12-22 Total Petrochemicals Research Feluy Purification of alcohols prior to their use in the presence of an acid catalyst

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
International Search Report and Written Opinion issued in the corresponding PCT/US2013/049079 on Nov. 8, 2013.

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BR112014033105B1 (pt) 2020-12-08
PL2850051T3 (pl) 2019-03-29
KR20150036352A (ko) 2015-04-07
CN104428277B (zh) 2017-03-15
BR112014033105A2 (pt) 2017-06-27
MY169252A (en) 2019-03-19
TWI586637B (zh) 2017-06-11
CN104428277A (zh) 2015-03-18
KR102074021B1 (ko) 2020-02-05
SG11201408624RA (en) 2015-01-29
EP2850051A1 (en) 2015-03-25
ES2701085T3 (es) 2019-02-20
US20150158790A1 (en) 2015-06-11
TW201418195A (zh) 2014-05-16
EP2850051B1 (en) 2018-09-05
IN2014DN10948A (enrdf_load_stackoverflow) 2015-09-18
WO2014008268A1 (en) 2014-01-09

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